Enhancing the electrochemical performance of a micron-sized Ge anode through in situ surface composite flower-like Zn2GeO4 for Li-ion batteries

Hao, Jian; Bai, Jincheng; Wang, Jing; Xu, Lu; Guo, Junli; Chen, Chi; Li, Haihong

doi:10.1039/d2se00795a

Cited by 4 publications

(1 citation statement)

References 43 publications

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“…However, the low capacity (~372 mAh g −1 ) of the graphite anode material of LIBs cannot meet the current market demand for high-energy storage [1][2][3][4]. Therefore, there is an urgent need to develop high-energy-density electrode materials to meet the needs of social development [5]. Anode materials such as Si, Ge, Sn, Zn, Ni and their oxides have high theoretical capacities.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Metal-Organic Frameworks Derived Synthesis of Zn2GeO4 Nanowire Bundles for Lithium-Ion Batteries

et al. 2023

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Germanium-based multi-metallic-oxide materials have advantages of low activation energy, tunable output voltage, and high theoretical capacity. However, they also exhibit unsatisfactory electronic conductivity, sluggish cation kinetics, and severe volume change, resulting in inferior long-cycle stability and rate performance in lithium-ion batteries (LIBs). To solve these problems, we synthesize metal-organic frameworks derived from rice-like Zn2GeO4 nanowire bundles as the anode of LIBs via a microwave-assisted hydrothermal method, minimizing the particle size and enlarging the cation’s transmission channels, as well as, enhancing the electronic conductivity of the materials. The obtained Zn2GeO4 anode exhibits superior electrochemical performance. A high initial charge capacity of 730 mAhg−1 is obtained and maintained at 661 mAhg−1 after 500 cycles at 100 mA g−1 with a small capacity degradation ratio of ~0.02% for each cycle. Moreover, Zn2GeO4 exhibits a good rate performance, delivering a high capacity of 503 mA h g−1 at 5000 mA g−1. The good electrochemical performance of the rice-like Zn2GeO4 electrode can be attributed to its unique wire-bundle structure, the buffering effect of the bimetallic reaction at different potentials, good electrical conductivity, and fast kinetic rate.

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Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Metal-Organic Frameworks Derived Synthesis of Zn2GeO4 Nanowire Bundles for Lithium-Ion Batteries

et al. 2023

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Zn2GeO4 rods/graphene supported on Ni foam as binder-free anode for enhanced Na ion storage performance

Chi,

Sun,

Wang

et al. 2024

J Mater Sci: Mater Electron

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A like-bulletproof glass structure flexibility-rigidity coating layer strategy for high-performance Li ion batteries Si anodes

Wang,

Hao,

Yang

et al. 2024

International Journal of Hydrogen Energy

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Enhancing the electrochemical performance of a micron-sized Ge anode through in situ surface composite flower-like Zn₂GeO₄ for Li-ion batteries

Abstract: Large volume changes of Ge-based electrode result in poor electrochemical cycling and rate performance is the important factor hampered the practical implementation of Ge-based materials to Li-ion batteries (LIBs). Here...

Cited by 4 publications

References 43 publications

Microwave-Assisted Metal-Organic Frameworks Derived Synthesis of Zn2GeO4 Nanowire Bundles for Lithium-Ion Batteries

Microwave-Assisted Metal-Organic Frameworks Derived Synthesis of Zn2GeO4 Nanowire Bundles for Lithium-Ion Batteries

Zn2GeO4 rods/graphene supported on Ni foam as binder-free anode for enhanced Na ion storage performance

A like-bulletproof glass structure flexibility-rigidity coating layer strategy for high-performance Li ion batteries Si anodes

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